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Morphology of heteromorphic seeds of S. ferganica. (A–F) Intact dry seeds. (A) Large seed with winged perianth (WP). (B) Middle seed with WP. (C) Small seed with WP. (D) Large seed without WP. (E) Middle seed without WP. (F) Small seed without WP. (G–J) Germination process of spiral embryo of seed without WP. Scale bars: (A–J): 1 mm.
